悬吊斗屏对单层球面网壳结构静力稳定性的影响分析

Analysis of the influence of center-hung scoreboard on the static stability of single-layer spherical lattice shell structures

随着体育事业和商业演出行业的发展,斗屏在大跨度体育场馆中的应用逐渐增多。斗屏悬吊在屋盖中央,重量一般在数吨到数十吨不等,其在大跨度屋盖上形成较大的集中质量,对屋盖结构稳定性的影响不宜忽略。单层球面网壳是体育场馆的一种屋盖结构,静力稳定性是其关键设计内容之一,而当前,悬吊斗屏对单层球面网壳静力稳定性的影响研究较少。因此,通过使用自编SXWG软件进行几何参数化建模,使用ABAQUS软件建立有限元模型,探讨有/无斗屏、不同斗屏重量、不同矢跨比、不同吊点布置等因素对单层球面网壳静力稳定性的影响,为悬吊斗屏的体育馆单层网壳结构设计提供参考。

With the development of sports and commercial performance industries,the application of center-hung scoreboards in large-span sports venues is gradually increasing.The center-hung scoreboard is suspended in the center of the roof,and its weight generally ranges from several tons to tens of tons.The center-hung scoreboard forms a large concentrated mass on the large-span roof,and its impact on the stability of the roof structure should not be ignored.Single-layer spherical latticed shell is a roof structure of sports venues,and static stability is one of its key design contents.However,there is relatively little research on the influence of suspended center-hung scoreboards on the static stability of single-layer spherical latticed shell.Therefore,by using self-designed SXWG software for geometric parameterization modeling and ABAQUS software to establish a finite element model,the influence of factors such as the presence/absence of center-hung scoreboards,different center-hung scoreboard weights,different rise-span ratio and different suspension point arrangements on the static stability of single-layer spherical lattice shells is explored,providing reference for the design of single-layer lattice shell structures in sports venues with center-hung scoreboards.